Simultaneous Equations
3x + y = 4
5x - y = 22
The signs of the matching values aren't the same so we add the rest of the equations.
8x = 26
Divide both sides by 8 to get x = 3.25
Now substitute back into the first equation.
(3 x 3.25) + y = 4
9.75 + y = 4
Subtract 9.75 from both sides
y = -5.75
Can you show a better picture?
Answer: 6.2x10^10
Step-by-step explanation:
There must be a number less than 10 on the left side
25/40 = x/120
solve for x you get 75
